I also recognized the different icon color, that’s nice. Helps better identifiy the 1 Pro and 2.x.
I don’t know much about design. You can influence the colour of the arrow via the foreground colour. For me, it would be consistent if the colour of the text and the colour of the pressed button were adjusted to the same colour, because otherwise you might have two different shades of blue on the screen, which would look like a break in style.
But that is not really important to me. More important for me is that I can read the nav bar texts during navigation. It’s just a thought.
Don’t know if this is possible and if it is good looking: would it be technically easy to adjust the arrow and text filling with the foreground color options and the shaddow/border with the background color options? Maybe just for testing in 2.0.9 and if the majority of users says good, then keep, otherwise take back.